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“f” after number
...ution down with four int->float conversions (that are among the slowest casts). Although in this case is almost unimportant, it's always better to specify correctly f if needed: in an expression a constant without the right specifier may force the whole expression to be converted to double, and i...
How do you get assembler output from C/C++ source in gcc?
...+ from a DOS window on Win-XP, against a routine that contains an implicit cast
c:\gpp_code>g++ -g -O -Wa,-aslh horton_ex2_05.cpp >list.txt
horton_ex2_05.cpp: In function `int main()':
horton_ex2_05.cpp:92: warning: assignment to `int' from `double'
The output is asssembled generated code i...
Changing selection in a select with the Chosen plugin
I'm trying to change the currently selected option in a select with the Chosen plugin.
4 Answers
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Defining Z order of views of RelativeLayout in Android
...ieve.
I you set an elevation of an element in the layout it will start to cast a shadow. If you don't want this effect you can remove the shadow with code like so:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
myView.setOutlineProvider(null);
}
I haven't found any way to re...
How do you get the logical xor of two variables in Python?
...!= bool(b) != bool(c) to be the same as bool(a) ^ bool(b) ^ bool(c). So do casts to bool, but I would recommend ^. To know what's going up in the first example look up "operator chaining".
– elmo
Jul 25 '12 at 11:50
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Count number of days between two dates
...ost likely the dates are coming from ActiveRecord which will automatically cast them to date objects. The given text is identical to Date object representation as well, making it highly likely it's come from a native source.
– Andrew France
Mar 5 '12 at 20:04
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returning a Void object
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If you want to return null as void you need to cast it in some cases: (Void) null
– Patrick Favre
Mar 29 '16 at 10:04
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Is it safe to delete a void pointer?
...e of the original pointer. The only way to restore an object pointer is to cast the void pointer back to an object pointer (which requires the author to know what the pointer means). void itself is an incomplete type and thus never the type of an object, and a void pointer can never be used to ident...
How might I convert a double to the nearest integer value?
...een given.
When converting to int, simply add .5 to your value before downcasting. As downcasting to int always drops to the lower number (e.g. (int)1.7 == 1), if your number is .5 or higher, adding .5 will bring it up into the next number and your downcast to int should return the correct value. (...
Resolving ambiguous overload on function pointer and std::function for a lambda using +
... (see discussion in the comments).
Still, I'd recommend using an explicit cast to the function pointer type if you want to avoid the ambiguity: you don't need to ask on SO what is does and why it works ;)
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